The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.

Blue flames of burning sulfur: Ijen volcano in East Java has one of the most impressive sulfur deposits on earth. They are so hot that the sulfur often ignites - a mysterious display at night caught on camera.

Eyjafjallajökull volcano photos: The volcano in Iceland with the unpronounceable name... but famous in 2010 when its ash clouds drifted over Europe and forced a unprecedented large-scale airspace closure for several days, stranding millions of passengers.

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